License the 25 tons you actually install, not the unlimited you might one day

Ask a Florida HVAC contractor when he is getting his own certificate and the answer tends to be: not yet. The license people talk about is Class A, Class A is unlimited, and unlimited sounds like something you earn after a decade on somebody else's payroll. So the changeouts keep going out under another man's number, and the man whose number it is keeps the contract and the customer.

The statute is not asking you for unlimited. Section 489.105(3)(g) of the Florida Statutes defines a Class B air-conditioning contractor as one whose services are limited to 25 tons of cooling and 500,000 Btu of heating in any one system. A ton of refrigeration is 12,000 Btu an hour, so the cooling limb of that cap is 300,000 Btu an hour in one system. Put a four ton split serving a house next to it, then a twenty ton package unit on a strip retail roof. The question stops being whether Class B is big enough and becomes how many seasons you spent waiting for a class you were not going to use.

Here is what the waiting costs, and it is not the fee. Rule 61G4-12.009 prices the entire way in at $585: $335 for the application and the tests, $200 for the certificate, $50 to qualify your company behind it. On the other side of that line, s.489.128(1)(a) says a business organization is unlicensed if it has no qualifying agent concerning the scope of the work to be performed under the contract, and an unlicensed contractor's contracts are unenforceable in law or in equity, with no lien or bond claim existing in his favor for any labor, services, or materials provided under one. Section 489.13(3) adds a fine of up to $10,000. One finished rooftop you cannot sue on and cannot lien is the whole calculation.

By the end of this page you will have the cap read the way the statute writes it, the one year route from Class B to Class A in s.489.111(2)(c)5.c, your history totalled in person-hours against the doors in s.489.111(2)(c), the scope lines separating Class B from Class A from Mechanical, the Division II insurance numbers, your company qualified under s.489.119, and August 31, 2026 on a clock.

Read the cap the way the statute writes it, because three words do most of the work

The phrase is "in any one system". Not per job, not per contract, not per building. That is the difference between a license that covers your work and a license you talked yourself out of.

The second word that matters is "and". The cap reads 25 tons of cooling and 500,000 Btu of heating in any one system, so both limbs bind. In Florida the cooling limb binds first on nearly anything you touch, and the heating limb turns up on gas fired make-up air.

One or two jobs a year land on the wrong side of that table, and those are jobs a Class A holder will happily partner on while you bill the rest yourself.

One more line in paragraph (g) matters before you quote duct work. Class B duct work is allowed only to the extent it is necessary to complete an air-distribution system being installed under this classification, and Class A gets that clause without the tail. Duct hung on a system you are not installing belongs to somebody else.

Take Class B first, because the statute prices the upgrade at one year

Section 489.111(2)(c)5 sets out how an air-conditioning contractor moves between classes, and the shortest row in it belongs to you.

Sub-item 5.c says an active certified Class B contractor is eligible to receive a certified Class A license after passing the Class A examination if he or she possesses a minimum of one year of proven experience in the classification in which he or she is certified. One year, held as a Class B contractor, which is a year of your own contracts and your own customer list rather than another year of building a case out of W-2s.

The two Class C rows are not a route in for anyone reading this now. Section 489.105(3)(h) closes that class on its face: only a person registered or certified as a Class C air-conditioning contractor as of October 1, 1988, may be so registered or certified after that date. Any page telling you to pick up a Class C on the way has been wrong since 1988.

So the two real paths to Class A start at the same place, the four year door in s.489.111(2)(c)2. One of them then waits, on somebody else's certificate. The other spends $585 and two tests, holds Class B, bills its own work for a year, and sits the Class A exam under 5.c. The second is not slower. It is the same qualification followed by a year you get paid for.

Price what Class A actually adds before you call it the goal

Paragraphs (f) and (g) of s.489.105(3) are near-identical texts. Four things separate them.

What the two share is longer than what separates them. Both may work power wiring on the line or load side of the dedicated existing disconnect switch on single phase systems, replace disconnects, breakers or fuses for dedicated HVAC circuits with proper use of a circuit breaker lock, run low voltage control wiring, install a condensate drain to an approved disposal other than a direct connection to a sanitary system, and excavate incidental to the job.

Both stop at the same walls, and those walls put you in front of a second trade. Neither reaches electrical power wiring, potable water lines, sanitary sewer lines, or pool piping and filters. Neither reaches liquefied petroleum or natural gas fuel lines within buildings, with one carve-out that saves a lot of service calls: disconnecting or reconnecting changeouts of gas appliances within buildings is allowed. The power wiring line is the one crossed casually on a service truck, and where it falls is in the Florida electrical contractor's license.

Two neighboring classes get confused with yours. The Mechanical contractor under s.489.105(3)(i) is a strict superset of Class A, and the practical difference is fuel gas: paragraph (i) affirmatively includes gas fuel lines within buildings, drops fuel gas from its exclusion list, and adds lift station equipment and piping, gasoline tanks and pumps, standpipes, oxygen and nitrous oxide lines, and fuel transmission lines. If your work is restaurants with gas equipment, that is the class it points at. The sheet metal contractor under s.489.105(3)(d) is defined by gauge rather than capacity, U.S. No. 10 or lighter, and carries no refrigeration, no heating, no piping and no electrical allowance: he hangs the duct and sets the air handler, and the refrigerant circuit is yours.

Count person-hours against the doors, not birthdays against the rumour

Section 489.111(2)(c) is written in the alternative: satisfy one door and walk through it. The prerequisites underneath all of them sit in s.489.111(2)(b), and they are eighteen and good moral character.

The conversion sits in the same subsection, and it is the most useful sentence in Chapter 489 for a working mechanic: a minimum of 2,000 person-hours is used in determining full-time equivalency. The board counts hours, not calendar pages. Hours from different employers add into one total, a broken stretch still counts because a season doing something else does not reset the number, and a light year converts at 2,000 rather than counting whole.

Door 3 shortens the wait, because junior and community college credits count. Subparagraph 3 is one undivided sentence carrying all three combinations, so a page citing you a 3.a. or a 3.b. is reading its own numbering back to you. Two years at a state college at twenty, in any subject, written off as a false start, is two years of the count under the second combination, and it does not expire.

Division II applicants get a second advantage. Rule 61G4-15.001, effective May 16, 2024, names workmanship areas an applicant must have covered, four of six commercial areas for General and Building, three of five for Residential, and none at all for the Division II trades. The general contractor at the supply house proves elevated slabs and steel erection. You prove hours and a foreman year. Rule 61G4-16.001 then sets most Division II categories at two tests rather than his three, at a uniform 70 percent on each.

Take certified rather than registered, because the county counter closed on July 1, 2025

Florida licenses in two tiers, and only one of them travels.

A certified contractor holds a statewide license obtained by state examination, prefix C, and may contract in any of the 67 counties. A registered contractor may contract only where his local competency was accepted. Miami-Dade and Broward touch. Orange, Seminole and Osceola touch. A registered contractor turning down a twenty minute drive because it crosses a line is turning down the densest part of his own service map.

Section 163.211 preempted occupational licensing to the state, and the grandfathering that let local governments license contractors on their own terms expired on July 1, 2025. The registered tier is alive and small: on the live DBPR construction licensee extract, 3,467 registered licenses are active against 97,093 certified ones. New ones still issue, but only backwards. Section 489.117(2)(b) commands the board to register an applicant who held a local license or a state certificate of registration in a Florida local jurisdiction during 2021, 2022 or 2023, with no examination required, and the registration issued is good in that one specified local jurisdiction. It is a door for competency you were already granted somewhere, not a license that travels.

Take the certificate that works statewide: what a certified Class B may contract for reads the same in Key West as in Pensacola. The architecture behind the divisions and the tiers is in getting your Florida contractor's license.

Write the insurance to the Division II line, and pull the credit report first

Your broker has a template on file, and it is probably the wrong one.

Rule 61G4-15.003 sets $100,000 public liability and $25,000 property damage for the CILB categories outside General and Building, air conditioning included, against the $300,000 and $50,000 a general contractor carries. Section 489.115(5) makes proof of public liability, property damage and workers' compensation a condition of getting the license and of renewing it, so this is a document you produce twice. Ask for it against your rule number rather than a description of your work, and check the insured entity name reads exactly as the entity holding the license. A policy written to a trading name against a license held through an LLC is two documents describing two companies. What a general contractor wants from that same certificate is in contractor insurance certificates in Florida.

Financial responsibility is a separate test under Rule 61G4-15.006, effective May 5, 2024. It asks for a current consumer credit report showing no unsatisfied judgments or liens, on you and on any entity you have qualified before. Financial stability is then satisfied one of two ways: a FICO derived score of 660 or better, or a fourteen hour Board approved financial responsibility course. There is no bond alternative in the current rule, with one exception: where a Financially Responsible Officer qualifies the business, Rule 61G4-15.0021(2) wants a $100,000 bond or irrevocable letter of credit payable to the Board, and that officer still meets 61G4-15.006 personally. Pull the report early, because a forgotten judgment from 2019 takes weeks to clear and four minutes to discover.

Qualify the company, then put August 31, 2026 on a clock

The certificate is yours, the human being's. Your company holds nothing until you qualify it.

Section 489.119 is the mechanism: a business organization needs a certificate of authority, obtained when a primary qualifying agent qualifies the entity. Under s.489.1195 that agent answers for supervision of all operations of the business organization, for all field work at all sites, and for financial matters both for the organization in general and for each specific job, and where a business names more than one primary agent they carry all of that jointly and equally. A secondary agent covers specific projects and shares the field work supervision with the primary one. That same section governs an agent leaving, and the answer lands back on s.489.128: an entity with no qualifying agent cannot contract, so its contracts are unenforceable and the lien and bond claims go with them. The mechanics, including getting out cleanly, are in the Florida qualifying agent. Section 489.119 also puts your license number on every advertisement, bid and proposal, so it belongs in your quote template.

Then the calendar. Certified licenses renew on August 31 of even numbered years, registered ones on odd years, and the next certified date is August 31, 2026. Continuing education is fourteen hours per biennium under Rule 61G4-18.001, with a mandatory core of one hour each of the specialised advanced Florida Building Code module, workplace safety, business practices, workers' compensation, and Florida laws and rules.

Read the conditional hours before you buy a package, because the air conditioning classes carry none of them. Wind mitigation binds General, Building, Residential, Roofing, Specialty Structure and Glass and Glazing. Pool electrical binds the pool categories, stucco binds General, Building, Residential and Specialty Structure. For a Class B holder that leaves five fixed hours and nine you choose, and a first renewal more than twelve months after licensure is seven rather than fourteen.

Missing the date is a status change rather than a fee. The license goes delinquent, then null and void, and contracting on a void license is unlicensed contracting, with s.489.128 behind it.

On AEC Stack that date is one question and then a clock. Answer on your business profile that you hold a Florida CILB license and the fl_contractor_licence_renewal clock resolves against the seeded Florida rule set rather than a generic reminder: August 31 of the next even year, DBPR CILB as the authority, Rule 61G4-18.001 as the rule, and the consequence on its face as delinquent, then null and void, then unlicensed contracting exposure. It sits with the May 1 Sunbiz annual report and the two year workers' compensation exemption expiry, the three dates that take a Florida company apart in sequence. Your job clocks run on the same engine, so the day a general contractor stops paying on a 20 ton retrofit the notice dates are already computed from the job's facts, which is the machinery behind the Florida notice to owner.

<!-- CAPTURE LATER: the Florida compliance calendar with holds_fl_cilb_licence answered yes and the class set to CAC-B, showing fl_contractor_licence_renewal resolved to August 31, 2026 with the DBPR CILB authority line, the Rule 61G4-18.001 reference and the status_lost consequence visible. Blocked in this wave: the demo tenant is Ontario. -->

What it costs

There is no monthly subscription. The platform fee is 2.5% of each invoice processed through AEC Stack, collected on payment due dates.

Every fee below is set by Rule 61G4-12.009 and goes to the board, not to us.

Certified Class B, from nothing to a certificate with your company qualified behind it: $335 plus $200 plus $50, which is $585. Holding it is $250 a biennium, or $125 a year, plus the fourteen hours. The insurance is the larger recurring line, and it is one you were carrying anyway.

Do the tonnage tonight. Pull your last two years of invoices, write the largest single system on each job in one column, and count the rows over 25 tons. If the answer is one or two a year, you have been waiting for a class you would use twice, and the certificate covering the rest of that sheet costs $585 and two tests. Open your business profile at start your business so there is an entity for it to attach to, then see what the certified column is bidding on at find work, where roughly 2,148 open Florida opportunities refresh weekly, 1,768 in Miami-Dade and 380 around Orlando. For a lot of the people reading this the honest answer to how many more years they wait is one, and it is a year billing under their own number.